linux/drivers/net/wireless/b43/sysfs.c
Linus Torvalds d3ec4844d4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
  fs: Merge split strings
  treewide: fix potentially dangerous trailing ';' in #defined values/expressions
  uwb: Fix misspelling of neighbourhood in comment
  net, netfilter: Remove redundant goto in ebt_ulog_packet
  trivial: don't touch files that are removed in the staging tree
  lib/vsprintf: replace link to Draft by final RFC number
  doc: Kconfig: `to be' -> `be'
  doc: Kconfig: Typo: square -> squared
  doc: Konfig: Documentation/power/{pm => apm-acpi}.txt
  drivers/net: static should be at beginning of declaration
  drivers/media: static should be at beginning of declaration
  drivers/i2c: static should be at beginning of declaration
  XTENSA: static should be at beginning of declaration
  SH: static should be at beginning of declaration
  MIPS: static should be at beginning of declaration
  ARM: static should be at beginning of declaration
  rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
  Update my e-mail address
  PCIe ASPM: forcedly -> forcibly
  gma500: push through device driver tree
  ...

Fix up trivial conflicts:
 - arch/arm/mach-ep93xx/dma-m2p.c (deleted)
 - drivers/gpio/gpio-ep93xx.c (renamed and context nearby)
 - drivers/net/r8169.c (just context changes)
2011-07-25 13:56:39 -07:00

155 lines
3.4 KiB
C

/*
Broadcom B43 wireless driver
SYSFS support routines
Copyright (c) 2006 Michael Buesch <m@bues.ch>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <linux/capability.h>
#include <linux/io.h>
#include "b43.h"
#include "sysfs.h"
#include "main.h"
#include "phy_common.h"
#define GENERIC_FILESIZE 64
static int get_integer(const char *buf, size_t count)
{
char tmp[10 + 1] = { 0 };
int ret = -EINVAL;
if (count == 0)
goto out;
count = min(count, (size_t) 10);
memcpy(tmp, buf, count);
ret = simple_strtol(tmp, NULL, 10);
out:
return ret;
}
static ssize_t b43_attr_interfmode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct b43_wldev *wldev = dev_to_b43_wldev(dev);
ssize_t count = 0;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mutex_lock(&wldev->wl->mutex);
if (wldev->phy.type != B43_PHYTYPE_G) {
mutex_unlock(&wldev->wl->mutex);
return -ENOSYS;
}
switch (wldev->phy.g->interfmode) {
case B43_INTERFMODE_NONE:
count =
snprintf(buf, PAGE_SIZE,
"0 (No Interference Mitigation)\n");
break;
case B43_INTERFMODE_NONWLAN:
count =
snprintf(buf, PAGE_SIZE,
"1 (Non-WLAN Interference Mitigation)\n");
break;
case B43_INTERFMODE_MANUALWLAN:
count =
snprintf(buf, PAGE_SIZE,
"2 (WLAN Interference Mitigation)\n");
break;
default:
B43_WARN_ON(1);
}
mutex_unlock(&wldev->wl->mutex);
return count;
}
static ssize_t b43_attr_interfmode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct b43_wldev *wldev = dev_to_b43_wldev(dev);
int err;
int mode;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mode = get_integer(buf, count);
switch (mode) {
case 0:
mode = B43_INTERFMODE_NONE;
break;
case 1:
mode = B43_INTERFMODE_NONWLAN;
break;
case 2:
mode = B43_INTERFMODE_MANUALWLAN;
break;
case 3:
mode = B43_INTERFMODE_AUTOWLAN;
break;
default:
return -EINVAL;
}
mutex_lock(&wldev->wl->mutex);
if (wldev->phy.ops->interf_mitigation) {
err = wldev->phy.ops->interf_mitigation(wldev, mode);
if (err) {
b43err(wldev->wl, "Interference Mitigation not "
"supported by device\n");
}
} else
err = -ENOSYS;
mmiowb();
mutex_unlock(&wldev->wl->mutex);
return err ? err : count;
}
static DEVICE_ATTR(interference, 0644,
b43_attr_interfmode_show, b43_attr_interfmode_store);
int b43_sysfs_register(struct b43_wldev *wldev)
{
struct device *dev = wldev->dev->dev;
B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED);
return device_create_file(dev, &dev_attr_interference);
}
void b43_sysfs_unregister(struct b43_wldev *wldev)
{
struct device *dev = wldev->dev->dev;
device_remove_file(dev, &dev_attr_interference);
}